[Bug c/19472] New: compiler internal error: in var_ann, at tree-flow-inline.h:34

["poirierg at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

A big chunk of inline i386 ASM from the ffmpeg project causes the compiler to
crash. The same code compiles fine with gcc-3.4, 3.3, 2.95

The command line is:
/usr/lib/gcc-snapshot/bin/gcc -I../libvo -I../../libvo -I/usr/X11R6/include
-fno-PIC -g -O4 -march=athlon-xp -mcpu=athlon-xp -pipe -ffast-math
-fomit-frame-pointer -D_REENTRANT -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 
-DHAVE_AV_CONFIG_H -I.. -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_GNU_SOURCE
-c -o libpostproc/postprocess.o libpostproc/postprocess.c -v -save-temps


The compiler output messages are:
In file included from libpostproc/postprocess.c:655:
libpostproc/postprocess_template.c: In function 'postProcess_MMX2':
libpostproc/postprocess_template.c:3511: warning: pointer targets in passing
argument 6 of 'blockCopy_MMX2' differ in signedness
libpostproc/postprocess_template.c:3657: warning: pointer targets in passing
argument 6 of 'blockCopy_MMX2' differ in signedness
libpostproc/postprocess_template.c:3758: warning: pointer targets in passing
argument 4 of 'tempNoiseReducer_MMX2' differ in signedness
libpostproc/postprocess_template.c:3782: warning: pointer targets in passing
argument 4 of 'tempNoiseReducer_MMX2' differ in signedness
libpostproc/postprocess_template.c:3349: internal compiler error: in var_ann, at
tree-flow-inline.h:34
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.
make[2]: *** [libpostproc/postprocess.o] Error 1
make[2]: Leaving directory `/home/guillaume/main/libavcodec'
make[1]: *** [libavcodec/libavcodec.a] Erreur 2
make[1]: Leaving directory `/home/guillaume/main'
make: *** [build-stamp] Erreur 2

-- 
           Summary: compiler internal error: in var_ann, at tree-flow-
                    inline.h:34
           Product: gcc
           Version: 4.0.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: poirierg at gmail dot com
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: ../src/configure -v --enable-
                    languages=c,c++,java,objc,ada --pre
  GCC host triplet: GNU/Linux Debian SID i386, gcc 4.0.0 20050110
                    (experimental)
GCC target triplet: i386, athlon-xp


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19472